Log.java

/**
 * This file was automatically generated from Log.cs 
 * w/ further modifications by:
 * @author Christoph M. Wintersteiger (cwinter)
 **/

package com.microsoft.z3;

/**
 * Interaction logging for Z3. <remarks> Note that this is a global, static log
 * and if multiple Context objects are created, it logs the interaction with all
 * of them. </remarks>
 **/
public final class Log
{
    private static boolean m_is_open = false;

    /**
     * Open an interaction log file. <param name="filename">the name of the file
     * to open</param>
     * 
     * @return True if opening the log file succeeds, false otherwise.
     **/
    public static boolean open(String filename)
    {
        m_is_open = true;
        return Native.openLog(filename) == 1;
    }

    /**
     * Closes the interaction log.
     **/
    public static void close()
    {
        m_is_open = false;
        Native.closeLog();
    }

    /**
     * Appends the user-provided string <paramref name="s"/> to the interaction
     * log.
     * @throws Z3Exception 
     **/
    public static void append(String s) throws Z3Exception
    {
        if (!m_is_open)
            throw new Z3Exception("Log cannot be closed.");
        Native.appendLog(s);
    }

    /**
     * Checks whether the interaction log is opened.
     * 
     * @return True if the interaction log is open, false otherwise.
     **/
    public static boolean isOpen()
    {
        return m_is_open;
    }
}